水力模量

但是北京的水比秦皇岛的好喝。

CNC hydraulic press brake

hydraulic copying head【机】;hydro-tracer head【机】

hydraulic torque converter lockout【机】;hydraulic torque converter lockup【机】

conical gear motor, hydraulic

hoist up and down hydraulic cylinder

energy, electric, hydraulic, pneumatic

hydraulic pulling-over and forepart lasting machine

valve-gear, hydraulic or pneumatic